Angular: Empty Fiddle

http://angularjs.org/

HTML

<script src="http://code.angularjs.org/angular-1.0.1.js"></script>
<div ng-controller="MyCtrl" style="padding-left: 100px">
<br><br>
   <input type="number" ng-model="model.one"> <br><br>
   <input type="number" ng-model="model.two"> <br><br>
   <input type="text" placeholder="{{100 * ((model.two - model.one) / model.one)| number:2}}{{'%'}}" disabled>
</div>

JavaScript

var myApp = angular.module('myApp',[]);

//myApp.directive('myDirective', function() {});
//myApp.factory('myService', function() {});

function MyCtrl($scope) {
    $scope.model = {
    	one : 10,
      two: 10
    };
}